Lateral recumbency after Metronidazole in dogs

The FDA has received 62 reports of lateral recumbency in dogs after Metronidazole. That is 2.0% of all reports for this medicine, compared with 0.3% across reports for all dog medicines, so it is reported unusually often with this medicine.

62Reports
97%Marked serious
8.1%Recovered
66%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
13 22%
1–2 days
13 22%
3–7 days
10 17%
1–4 weeks
11 19%
Over a month
12 20%

How the animals did

Recovered
5 8.1%
Still unwell when reported
13 21%
Died
13 21%
Euthanised
28 45%
Not known
3 4.8%

Problems reported at the same time

Age of the animals

Under 1 year
13
1–3 years
19
4–7 years
6
8–11 years
14
12+ years
10

About this medicine

Metronidazole treats some bacterial and parasitic gut infections.

Questions owners ask

Can Metronidazole cause lateral recumbency in dogs?
62 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.
How soon after a dose was it reported?
In half of the reports with dates, it started within 3 days of the first dose.
What should I do?
Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).

Lateral recumbency with similar medicines

All reported side effects of Metronidazole in dogs · Medicines most reported with lateral recumbency